Head out of the Laser Command Center. It is time to put an end to this laser blasting of Elpis. Head out of the room and to the South. Out of the corridor, head to the left and go down the stairs there into the Moonshot Supply Depot. Turn to the North and start across the area. Throughout this area keep an eye out for FIX Loaders. You can approach and activate them to have them reboot as GUN Loaders which will then help you out.

Go down the stairs. You will have a number of Lost Legion on you very quickly. Mostly Marines with the odd Engineer right at the start. The next set of stairs down can lead you right to a few Corrosive Marines or another Elemental Marine. Clear them out and you will be facing some Lost Legion Sniper. Continue to head to the North.

Go through the short corridor to the Helios Targeting Centrum. Head straight across the area and over toward the entrance of the Eye of Helios. Zarpedon will order the force field up moments before you can get in.